Dyson Cool fans

It is very interesting to see how much testing is being done to the fans. To optimize airflow, complex 3D models are used to map sound. Through a translucent Dyson Cool prototype and a high-speed camera, UV paint was passed through the machine’s loop amplifier to chart airflow. To test the sound quality, aero-acoustics engineers arrange ten microphones in a hemisphere in semi-anechoic chambers.